HAT5629 {0} cannot be restored because it has been committed
Explanation
You are trying to restore fix {0} and fix {1} has already been committed. You cannot restore a fix that has been committed.
User response
Use the report command to see a list of applied and committed fixes. Reevaluate the need to remove fix {0}. If you really need to remove the fix you will have to reinstall the product. Reinstalling the product will remove all CAPARs and APARs.